update host_routes of a subnet returns old information in metaplugin

[Itsuro Oda]

Not always. I can't find the reproduce condition. (may be sqlalchemy magic ?)
This is an example log which the bug occur.
---
$ quantum subnet-show sub1
+------------------+----------------------------------------------------------+
| Field | Value |
+------------------+----------------------------------------------------------+
| allocation_pools | {"start": "10.0.0.2", "end": "10.0.0.254"} |
| cidr | 10.0.0.0/24 |
| dns_nameservers | 10.0.0.20 |
| enable_dhcp | True |
| gateway_ip | 10.0.0.1 |
| host | IPA-3 |
| host_routes | {"destination": "10.0.10.0/24", "nexthop": "10.0.0.200"} |
| | {"destination": "10.0.20.0/24", "nexthop": "10.0.0.200"} |
| id | 65f1f1a6-a615-48a1-9c4e-cc4e813aacb9 |
| ip_version | 4 |
| name | sub1 |
| network_id | 4d0ef4da-f7d1-45a8-8c22-e284264d9145 |
| tenant_id | c34402ac0852467083d496e5d9ed15cc |
+------------------+----------------------------------------------------------+

### update one of nexthop to 10.0.0.250
### but the infomation remain old in the response body
$ curl -v http://172.17.190.3:9696/v2.0/subnets/65f1f1a6-a615-48a1-9c4e-cc4e813aacb9.json -X PUT -H 'Content-Type: application/json' -H 'Accept: application/json' -H 'X-Auth-Token: 59fbde0bec104a8fb4e92765f0beff8c' -d '{"subnet": {"host_routes": [{"nexthop": "10.0.0.250", "destination": "10.0.10.0/24"}, {"nexthop": "10.0.0.200", "destination": "10.0.20.0/24"}]}}'
* About to connect() to 172.17.190.3 port 9696 (#0)
* Trying 172.17.190.3... connected
> PUT /v2.0/subnets/65f1f1a6-a615-48a1-9c4e-cc4e813aacb9.json HTTP/1.1
> User-Agent: curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3
> Host: 172.17.190.3:9696
> Content-Type: application/json
> Accept: application/json
> X-Auth-Token: 59fbde0bec104a8fb4e92765f0beff8c
> Content-Length: 145
>
* upload completely sent off: 145out of 145 bytes
< HTTP/1.1 200 OK
< Content-Type: application/json
< Content-Length: 514
< Date: Mon, 19 Nov 2012 04:37:17 GMT
<
* Connection #0 to host 172.17.190.3 left intact
* Closing connection #0
{"subnet": {"name": "sub1", "enable_dhcp": true, "network_id": "4d0ef4da-f7d1-45a8-8c22-e284264d9145", "tenant_id": "c34402ac0852467083d496e5d9ed15cc", "dns_nameservers": ["10.0.0.20"], "allocation_pools": [{"start": "10.0.0.2", "end": "10.0.0.254"}], "host": "IPA-3", "host_routes": [{"nexthop": "10.0.0.200", "destination": "10.0.10.0/24"}, {"nexthop": "10.0.0.200", "destination": "10.0.20.0/24"}], "ip_version": 4, "gateway_ip": "10.0.0.1", "cidr": "10.0.0.0/24", "id": "65f1f1a6-a615-48a1-9c4e-cc4e813aacb9"}}

### it is OK, when show after update.
###
$ quantum subnet-show sub1
+------------------+----------------------------------------------------------+
| Field | Value |
+------------------+----------------------------------------------------------+
| allocation_pools | {"start": "10.0.0.2", "end": "10.0.0.254"} |
| cidr | 10.0.0.0/24 |
| dns_nameservers | 10.0.0.20 |
| enable_dhcp | True |
| gateway_ip | 10.0.0.1 |
| host | IPA-3 |
| host_routes | {"destination": "10.0.10.0/24", "nexthop": "10.0.0.250"} |
| | {"destination": "10.0.20.0/24", "nexthop": "10.0.0.200"} |
| id | 65f1f1a6-a615-48a1-9c4e-cc4e813aacb9 |
| ip_version | 4 |
| name | sub1 |
| network_id | 4d0ef4da-f7d1-45a8-8c22-e284264d9145 |
| tenant_id | c34402ac0852467083d496e5d9ed15cc |
+------------------+----------------------------------------------------------+

[Gary Kotton (garyk)]

Hi,
I am unable to reproduce this.
Questions:
1. Which plugin are you using?
2. Can you please try this with the CLI commands and let me know if you can reproduce:
For example "quantum subnet-update 032be573-29f4-4aee-b09d-fb4a87b79444 --host_routes list=true type=dict destination=2.0.0.0/24,nexthop=2.1.1.1 destination=4.0.0.0/24,nexthop=3.1.1.1"
Thanks
Gary

[Itsuro Oda (oda-g)]

I used metaplugin.

I can't reproduce with openvswitch plugin while it is easy to reproduce with metaplugin....

I will ask to a metaplugin expert.

Thanks.

[Gary Kotton (garyk)]

Hi,
Nachi, this seems to be related to the metaplugin. I have assigned to you.
Thanks
Gary

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/23493

[Cedric Brandily (cbrandily)]

This bug is > 365 days without activity. We are unsetting assignee and milestone and setting status to Incomplete in order to allow its expiry in 60 days.

If the bug is still valid, then update the bug status.

[Itsuro Oda (oda-g)]

I (reporter) think it was metaplugin specific, and metaplugin was removed already. Please close this bug.

[Launchpad Janitor (janitor)]

[Expired for neutron because there has been no activity for 60 days.]